It's set up to store 3 targets by default. If the target dies, it will automatically go to the next target.
You set the timer when you create the healrotation. A 2 for timer would be a 2 second rotation (if you have 6 clerics casting CHeal). I go with 4 clerics, so I use 3 or 4. You just have to make sure your spacing is enough for all of the recast, etc, or they will skip themselves ( same as if they don't have enough mana).
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